This problem will only require a little plane geometry. Post your solution in the blog comments section. so other Facebook readers will have a chance to work it.
Quiz Question
Category Archives: Math
Quiz Question
Number 449 of a series
There is a three-digit number.
The second digit is 4 times the third.
The first digit is 3 less than the second digit.
What is the number?
Post your answer in the comments section below.
Quiz Question
Number 448 of a series
See the image. What is the area of the blue triangle? Post your solution in the comments section below.
Quiz Question
Number 447 of a series
The area of the rectangle is 30 square feet. What is X?
Post your solution in the comments section below.
Quiz Question
Number 446 of a series
Here is an easy one to start your new year. Post your answer in the comments section below.
Quiz Question
Number 445 of a series
This is from a YouTube video, and I do not have a link. Give it your best shot, and enter your solution in the comments section below.
Quiz Question
Number 444 of a series
Here is another problem from a YouTube video. Find the values corresponding to the letters. Submit your answer in the comments section below.
Update and Solution
Curtis jumped right on this last week and provided the correct solution. My logic toward solving this went along the same lines as his. See his solution in the comments below.
Quiz Question
Number 441 of a series
The diagram says it all. Post your answer in the comments section below before viewing the video.
Quiz Question
Number 440 of a series
Rather than key in the problem description I will just paste a screen shot from the video.
Don’t watch the video until you have given a shot at solving the problem. Post your answer in the comments section below.
Quiz Question
Number 439 of a series
This is from a video, and there is a bunch of surplus baggage, but I will cut to the chase.
See the four men wearing hats. Here are the rules.
The men are perfect logicians, meaning they never ever make mistakes in logic.
They are told there are two red hats and two blue hats, but they are not told who is wearing which color.
The men are not allowed to converse, and they cannot look at their own hat.
They must always face forward. This means man 1 can see the hats on 2 and 3. Nobody can see man 4’s hat.
The challenge is over when one man figures out the color of his own hat and shouts out the answer.
Here is the heart of the matter. The men communicate by their silence. For example, if man 1 looks forward and sees two blue hats, then he knows he has a red hat, and he shouts it out. Else he keeps silent. The other men know from his silence that he does not know the color of his hat. How does one of the men figure out the color of his hat and what man?
Quiz Question
Number 438 of a series
Here is a puzzle from AARP magazine. See the following sequence of numbers
1, 6, 21, 66
After the first one each is derived from the previous number in the same way. What comes after 66?
Post your answer in the comments section below before going to your copy off AARP magazine.
Quiz Question
Number 437 of a series
I am guessing the problem involves turning over the least number of cards. Post your answer in the comments section below before viewing the video.
And now I have actually viewed the video, and there is an additional proviso I did not state above. That is all cards have a letter on one side and a number on the other side. Now solve the problem with that in mind. It really is easy.
Update and solution
You need to turn over the D and the 7. The D card may have a 6 on the other side. The 7 card may have a D on the other side. No worry about the 3 card. If there is a D on the other side or not, it does not matter. The K card does not matter. There is no D on the other side.
Quiz Question
Number 436 of a series
I’m getting lazy these days. There are times when it is easiest to pluck one of these off YouTube and paste it to the page. The solution is on YouTube, but have a go at it before peeking at the solution.
Post your response in the comments section below.
Quiz Question
Number 435 of a series
Evaluate the above expression. Supposedly there is an easy trick for doing it. Check out the video if you give up.
Otherwise post your solution in the comments section below.
Quiz Question
Number 434 of a series
See above a disk supported by two round bars. The diameter of the disk is 5, and the bars are centered on the disk and 3 inches apart. Where is the maximum bending moment on the disk?
Post your answer in the comments section below.
Quiz Question
Number 431 of a series
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Here are ten matchstick equation games. Move one match to make the equation correct. You can add a – sign by moving a match, but you cannot create ≠.
Post your answers in the comments section below. For example: (2) 5 – 3 = 2.
Quiz Question
Number 430 of a series
I am lazy again this week, so here is a simple algebra problem. Which is greater? No fair using a calculator. The solution is on YouTube.
Post your response in the comments section below.
Quiz Question
Number 429 of a series
Getting lazy again. Here is another geometry problem. Find the area of the triangle in question. The area of the other two triangles is 1. Post your solution in the comments section below.
Quiz Question
Number 428 of a series
Above is this week’s quiz question. This is on YouTube, but work it out before viewing the solution.
Quiz Question
Number 426 of a series
This is a standard puzzle, and I may have posted it before.
Two locomotives are on the same track facing each other five miles apart. Each locomotive is going 20 miles per hour. A fly on the front of the first locomotive takes off and heads toward the second locomotive at 30 miles per hour (some fly). When the fly reaches the second locomotive he does not crash, but he immediately turns around and heads back toward the first locomotive at 30 miles per hour.
The question is how far does the fly travel before the two locomotives collide? Post your answer in the comments section below.
Skeptical Analysis 